GB/T 37322-2019 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 37322-2019 | English | 265 |
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Test method for evaluating gasoline cleanliness - Simulation test of intake valve deposit (IVD) of gasoline engine
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GB/T 37322-2019: Test method for evaluating gasoline cleanliness - Simulation test of intake valve deposit (IVD) of gasoline engine
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT37322-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 75.160.20
E 31
Test method for evaluating gasoline cleanliness -
Simulation test of intake valve deposit (IVD) of
gasoline engine
Issued on. MARCH 25, 2019
Implemented on. OCTOBER 01, 2019
Issued by. State Administration for Market Regulation;
Standardization Administration of the PRC.
Table of Contents
Foreword... 3
Introduction... 4
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Method summary... 6
5 Instruments and equipment... 6
6 Reagents and materials... 7
7 Sampling... 8
8 Preparatory work... 8
9 Test procedures... 10
10 Calculation... 11
11 Test report... 11
12 Precision and deviation... 12
Appendix A (Normative) Technical requirements for simulation testing machine
of intake valve deposit of gasoline engine... 13
Appendix B (Normative) Equipment verification... 19
Bibliography... 22
Foreword
This Standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard was proposed by and shall be under the jurisdiction of National
Technical Committee 280 on Petroleum Products and Lubricants of
Standardization Administration of China (SAC/TC 280).
Responsible drafting organization of this Standard. SINOPEC Research
Institute of Petroleum Processing.
Participating drafting organizations of this Standard. Lanzhou Weike
Petrochemical Instrument Co., Ltd., Shenzhen Academy of Metrology & Quality
Inspection, Shandong Chambroad Petrochemicals Co., Ltd., Shenzhen Jimmy
Chemical Technology Co., Ltd., Guangdong (Huizhou) Quality Supervision &
Testing Centre for Petroleum Products, Lubrizol Additives (Zhuhai) Co., Ltd.,
Beijing Petroleum Product Quality Supervision and Inspection Center, Tianjin
Yuetai Petrochemical Technology Co., Ltd., Zhuhai Laikeli Environmental
Protection Technology Co., Ltd.
Main drafters of this Standard. Zhang Xin, Chen Yumeng, Zhang Demin, Zhao
Yan, Wang Jiqin, Li Ruibo, Wen Huan, Dai Song, Wang Shoucheng, Zhong
Liang, Dong Shuangjian, Zhang Jia, Huang Weilin.
1 Scope
This Standard specifies the simulation test method of the intake valve deposit
of the inlet jet gasoline engine, is used for evaluating the tendency of the
formation of intake valve deposit of gasoline engine.
This Standard applies to motor gasoline and motor gasoline detergent.
Note. The test conditions for the application of this Standard to motor ethanol gasoline
have not been determined. Further investigations of the engine correlation are
required.
2 Normative references
The following documents are indispensable for the application of this document.
For the dated references, only the editions with the dates indicated are
applicable to this document. For the undated references, the latest edition
(including all the amendments) are applicable to this document.
GB/T 4756 Method for manual sampling of petroleum liquids
GB 17930 Gasoline for motor vehicles
GB/T 19230.6 Test method for evaluating gasoline detergent in use - Part 6.
Engine dynamometer test method for influence of intake valve and
combustion chamber deposit tendencies of gasoline detergent (M111
method)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 Intake valve deposit
Any substance deposited on the surface of intake valve which is generated by
fuel, lubricating oil, and additives or which is drawn in from the outside.
3.2 Calibration reference fuel
A stable fuel with gasoline characteristics for calibrating the simulation testing
machine of intake valve deposit of gasoline engine.
3.4 Deposit accelerant
The substance which, in a high-temperature and oxygen environment, causes
metal surfaces to rapidly generate deposits on the intake valve similar to those
after long-term operation of engine.
4 Method summary
Under the specified test conditions, the quantitative sample is mixed with air
through a nozzle and sprayed onto a deposit collector which has been weighed
and heated to the test temperature, to simulate the formation of intake valve
deposit of gasoline engine.
5 Instruments and equipment
5.1 Test equipment
Simulation testing machine of intake valve deposit of gasoline engine. See
Appendix A for technical requirements.
5.2 Test instruments
5.2.4 Micro sample injector. 1000 μL, 250 μL.
5.2.5 Volumetric flask. 300 mL.
5.2.6 Tweezers.
5.2.7 Balance gloves.
5.2.8 Digital camera. no less than 8 million pixels.
6 Reagents and materials
6.1 Reagents
6.1.1 N-heptane. analytically pure.
6.1.6 Anhydrous ethanol. analytically pure.
6.1.7 Isopropanol. analytically pure.
6.2 Materials
6.2.1 Scouring pad. particle size 240~280.
6.2.2 Water sandpaper. 62 μm.
6.2.3 Deposit accelerant. See the requirements of B.2.1 in Appendix B.
6.2.4 Iron naphthenate diluent. See B.2.2.
6.2.5 Calibration reference fuel. The composition requirements are shown in
Table B.1.
6.2.8 Detergent. commercially available detergent.
6.2.9 Paper stick. It is rolled from filter paper and has a diameter of 1.5 mm.
6.2.10 Sponge. 35D.
7 Sampling
7.1 In accordance with GB/T 4756, a representative gasoline sample is taken.
Samples shall be taken and stored in opaque containers, such as dark brown
glass bottles and metal cans, to avoid exposure to sunlight or ultraviolet light.
7.2 Before the test, samples shall be placed indoors until being close to room
temperature.
8 Preparatory work
8.1 Preparation of deposit collector
8.1.1 The deposit collector is sanded using a scouring pad dipped in water and
a detergent along the length of the collector plate. For used collectors with
heavier deposits, USE water sandpaper dipped in water to grind; then USE the
scouring pad dipped in water and the detergent to polish, until the surface of
test plates is bright and unstained.
8.1.4 The collector is taken out from the dryer for weighing; and then placed
back into the dryer; and after 10 s, is weighed again. If the difference between
the two consecutive readings of weighing balance is no more than 0.1 mg, it
can be used as a stand-by. If the difference is greater than 0.1 mg, the collector
is placed back into the dryer. After 30 min, it is re-weighed, until the difference
between the two consecutive readings is no more than 0.1 mg.
8.2 Preparation of test equipment
8.2.1 The test time of the instrument is set to 85 min. The oil injection time is
set to 75 min. The test temperature is set to 175 °C (When the room
temperature is ≤20 °C, the temperature is set to 174 °C). The temperature
control accuracy is ±1 °C. TURN on the air source; adjust the air pressure to 80
kPa±1 kPa, and the air flow rate to 700 L/h±20 L/h.
8.2.4 TURN on the power switch of the equipment. USE the cleaning mode to
quickly spray the solution in the sample cup through the oil inlet hose and nozzle
to the solvent recovery box, until the spray is completed.
8.3 Equipment verification
According to Appendix B, the simulation testing machine of intake valve deposit
of gasoline engine is verified.
9 Test procedures
9.1 Test environmental conditions
Laboratory temperature. 16 °C~32 °C. TEST in a fume hood, forced ventilation.
9.2 Preparation of samples
9.3 Sample determination
9.3.1 LOAD in the weighed deposit collector and clamp it; PLUG in the
temperature thermocouple; and LOCK the oil inlet.
9.3.2 START the test, so that the deposit collector temperature reaches the set
temperature.
9.3.3 Adjust the air pressure to 80 kPa±1 kPa. The air flow rate is stabilized at
700 L/h±20 L/h.
9.4 Collector processing
9.4.1 USE tweezers to take out the deposit collector. After cooling to room
temperature, it is placed in a container containing n-heptane and allowed to
stand for 6 min, and then taken out.
9.4.2 The collector is immersed in a container containing petroleum ether
(60 °C~90 °C), left to stand for 1 min; and then taken out. INSERT the paper
stick into the thermometer hole of the collector, to absorb the reagent in the hole.
9.4.3 After the collector is placed in an oven at 100 °C for 15 min, it is taken out
into a dryer. The dryer is placed near the balance; and cooled to room
temperature.
the difference between the two consecutive readings is no more than 0.1 mg.
9.5 Photograph
PHOTOGRAPH the deposit collector after the test.
10 Calculation
The simulated intake valve deposit mass of the sample shall be calculated
according to formula (1).
11 Test report
The report shall include the following.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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